We present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3 deg2 Boötes field of the NOAO Deep Wide-Field Survey. The wide field probes a statistically representative volume of the universe at high redshift. The Chandra Deep Wide-field Survey exploits the excellent sensitivity and angular resolution of Chandra over a wide area, combining 281 observations spanning 15 yr, for a total exposure time of 3.4 Ms, and detects 6891 X-ray point sources down to limiting fluxes of 4.7 10-16, 1.5 10-16, and 9 10-16 erg cm-2 s-1 in the 0.5-7, 0.5-2, and 2-7 keV bands, respectively. The robustness and reliability of the detection strategy are validated through extensive, state-of-the-art simulations of the whole field. Accurate number counts, in good agreement with previous X-ray surveys, are derived thanks to the uniquely large number of point sources detected, which resolve 65.0% 12.8% of the cosmic X-ray background between 0.5 and 2 keV and 81.0% 11.5% between 2 and 7 keV. Exploiting the wealth of multiwavelength data available on the field, we assign redshifts to ∼94% of the X-ray sources, estimate their obscuration, and derive absorption-corrected luminosities. We provide an electronic catalog containing all of the relevant quantities needed for future investigations.
|Original language||English (US)|
|Journal||Astrophysical Journal, Supplement Series|
|State||Published - Oct 22 2020|
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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CDWFS: Chandra survey in Bootes. I. X-ray cat.
Masini, A. (Creator), Hickox, R. C. (Creator), Carroll, C. M. (Creator), Aird, J. (Creator), Alexander, D. M. (Creator), Assef, R. J. (Creator), Bower, R. (Creator), Brodwin, M. (Creator), Brown, M. J. I. (Contributor), Chatterjee, S. (Creator), Chen, C. J. (Contributor), Dey, A. (Creator), Dipompeo, M. A. (Contributor), Duncan, K. J. (Creator), Eisenhardt, P. R. M. (Contributor), Forman, W. R. (Creator), Gonzalez, A. H. (Creator), Goulding, A. D. (Creator), Hainline, K. N. (Creator), Jannuzi, B. T. (Creator), Jones, C. (Creator), Kochanek, C. S. (Creator), Kraft, R. (Creator), Lee, K. (Creator), Miller, E. D. (Creator), Mullaney, J. (Creator), Myers, A. D. (Creator), Ptak, A. (Creator), Stanford, A. (Creator), Stern, D. (Creator), Vikhlinin, A. (Creator), Wake, D. A. (Creator) & Murray, S. S. (Creator), Centre de Donnees Strasbourg (CDS), 2021
DOI: 10.26093/cds/vizier.22510002, https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/251/2